One of the most common complaints among computer users is the eyestrain. Fortunately, a simple trick can help: the 20-20-20 rule. Thats how it works.
Burning and itching in the eyes, blurred vision and headache are some of the symptoms that often occur in people who spend long hours in front of a screen. Especially among office workers, it is so common that the grouping of symptoms has a name: Computer Vision Syndrome.
The most obvious way to fix the problem is to take breaks to relax the eyes. However, this is not always an option. You can capture deadlines, videoconferencing, or video lectures on the computer without taking the time to relax for a few minutes.
Then Exercise 20-20-20 will help: Stare for 20 seconds every 20 minutes on objects 20 feet away from you. This gives your eyes the much needed rest and prevents strain.
To increase the restorative power of this trick, try finding green objects to stare at. In fact, our eyes perceive the color of green better than other colors, and research has shown that greens, especially darker greens like foliage, are more relaxing ̵
If your schedule allows, take it to the next level and take a short walk around the office or home. This gives your whole body a break from sitting. In addition, your students will get a good workout by looking at a variety of objects while walking, and keeping distances that the workspace does not allow.